v3.26.1
NONCONTROLLING INTERESTS - Effect of Changes (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Effects of changes in noncontrolling interests on equity    
Net Income (Loss) $ 8,606 $ 8,239
Transfers from noncontrolling interests:    
Increase in additional paid-in capital as a result of the repurchase of SES Holdings LLC Units (8,216) (6,367)
Ses Holdings Llc    
Effects of changes in noncontrolling interests on equity    
Net Income (Loss) 8,606 8,239
Transfers from noncontrolling interests:    
Decrease in additional paid-in capital from reallocation to Class B holders in connection with underwritten offering (8,289)  
Increase in additional paid-in capital as a result of restricted stock issuance, net of forfeitures 781 768
Increase in additional paid-in capital as a result of vested PSUs 530 406
Increase in additional paid-in capital as a result of the repurchase of SES Holdings LLC Units 674 502
Change to equity from net income attributable to Select Water Solutions, Inc. and transfers from noncontrolling interests $ 2,302 $ 9,915